George m



(No Model.)

GMM. P03 & w. 0. SLATTS.

BICYCLE LOCK.

Patented Apr. 28, 1896;

UNITED STATES PATENT OFFICE.

GEORGE M. POE AND \VILLIAM C. SLATTS, OF INDIANAPOLIS, INDIANA.

BICYCLE-LOCK.

SPECIFICATION forming part of Letters Patent No. 558,981, dated April 28, 1896. Application file clJuIy s, 1895. 1 Serial No. 556,345. (No model.

To aZZ whom it may concern:

Be it known that we, GEORGE M. POE and WILLIAM C. SLATTS, citizens of the United States, residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Bicycle-Locks; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Our invention relates to bicycle-locks of that class having a hasp or ring adapted to surround two parts of a bicycle, whereby either the front or rear wheels maybe prevented from turning.

The objects of our invention are, first, to provide a bicycle-lock of the class named that can be locked and unlocked without a key; second, that can be operated without visual aid, thus enabling the user to unlock it in the dark; third, that will be strong and durable, and, fourth, to provide a lock that is easily operated when the operator possesses the combination, but which is very difficult to open without it. These objects we attain by means of the devices described in the following specification and shown in the accompanying drawings.

Figure 1 is a perspective view of the lock closed, the dotted lines indicating its position when partly open. Fig. 2 is a cross-see tional view on line 2 2 of Fig. 1. Fig. 3is a cross-sectional view on the line 3 3 of Fig. 1. Fig. l is a cross-sectional view on the line at at of Fig. 1. Fig. 5 is a plan view of the separating-disks. Fig. 6 is a cross-sectional view on the line 6 6 of Fig. 1. Fig. 7 is a vertical sectional view of the lock as it appears when locked. Fig. 8 shows the relative positions of the angular notches and projections on the tumblers, and Fig. 9 is a perspective view of the spring.

The shoulder O is formed integral with one section of the hasp and the shaft F and has four or more right-angled triangular projections 4) on its outer edge, situated at equal distances apart. The angular groove S in shaft F extends far enough into the shoulder C to receive the lug c on the end of the tongue E, as shown in Fig. 7. A tumbler A, with a central aperture adapted to fit over the shaft F, is placed against the shoulder O, as shown, Fig. 2, showing the face of the tumbler on line 2 2 of Fig. 1. A spring g, curved to conform with the circumference of the tumbler and having a lateral curve with its highest point at 11, has one of its ends 0 turned at right angles to-its length. Grooves are form ed in the sides of the tumblers A, near the outer edge, which receives the spring 9, and the end 0 fits into a circular opening at one end of the groove, which serves to hold the spring in place. The lateral curve 2' of the springs when. in place in the tumblers stands out from the face of the tumbler, and when the separating-disks B are placed against the face of the tumblersA the curved portion i of the spring 9 presses against the disk l3 and serves to hold the tumbler in the position into which it is turned, but at the same time the pressure so exerted is not so great as to prevent the easy rotation of the tumblers. Fig. 6 is on the line 6 6 of Fig. 1, and shows the separating-disk B in front of the tumbler A.

The separating-disks B are circular in form without projections on the edge and being slightly smaller in diameter than the tumblers A. The central opening in the disks is of the same size as the central opening in the tumblers and have the angular notches to correspond with the angular notches a: in the tumblers, and in addition is provided with a V- shaped projection r opposite the angular notch. This projection 'r fits into the V- shaped groove 25 in the lower face of the shaft F, as shown in Fig. 6, and thereby prevents the separating-disks from rotating on said shaft.

The end of the shaft F'has threads 12, upon which a like threaded shoulder D is adapted to be screwed. The inner face of the shoulder D is smooth and serves for a bearing for the spring 9 (shown in Fig. 4) in place of a separating-disk. As will be seen, the line 4: f in Fig. 1 is next the inner face of said shoulder. An angular notch cc, corresponding with the angular notches in the tumblers A and separating-disks B, is cut in one side of the threaded central opening in the shoulder D ICO to allow the lugs e on the tongue E to enter. The tongue E has shoulders m on either side where it joins the hasp for the purpose of giving greater strength at that point.

Figs. 2, 3, and 4 illustrate the relative positions of the angular notches 0c and the projections o to form the combination shown in Fig. 1. The straight edges of the right-angled triangular projections are brought around to coincide with the straight edges of the like shaped projections on the shoulders O and D. It is obvious that the position which causes the lock to open will depend on the relative position of the angular notch 00. There are no letters or numerals on the tumblers, the combinations being obtained by means of the projections 11 on the tumblers and 1; on the shoulders C and D. As the projections can be readily brought into the required positions separating-disks B are of the same thickness, and the disks thus form a cover for the lugs.

The object in having the disks B secured against rotation is to prevent the turning of any one tumbler from turning another, which would be likely to occur. were the disks rotated. The user of a lock of this character can readily change the combination by removing the shoulder D and transposing the tumblers A. As the shoulders O and D each have four projections o, as described, said projections being opposite horizontally an equal distance apart around the circumference of the shoulders, it will be understood that the tumblers may have projections placed at four different relative points to the angular notches 00.

Having described our invention, what we claim, and desire to secure by Letters Patent of'the United States, is

In a bicycle-lock of the class described, the combination of the curved springs g, having one end 0, bent at a right angle to its length and having a lateral bend or curve, the highest point of which is near the center of its length, with the tumblers having the triain gular-shaped projections "0, on their outer edges, and a curved groove with a deeper opening at one end, to receive the end 0, of the spring g, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

GEORGE M. POE. \VILLIAM C. SLATTS. Witnesses:

DUDWELL BowLEs, AARON H. BLAIR. 

